Traveling in July with my wife and 2 teenage daughters, including 4 full days in Rome. Our fourth day in Rome will be at the Vatican (pristine Sistine tour already booked). We are planning to visit the colosseum/forum, the borghese and Ostia on the other days for sure, all of which are covered by the Roma pass, so I am thinking it makes sense for us, especially when taking into account the unlimited transit that comes with the pass. However it is my understanding that my daughters would have free admission the the coliseum/forum as well as the borghese. So maybe it doesn't make sense to get the Roma pass for them, rather just a 3 day transit pass? If we have a Roma pass which allows us to bypass the ticket line at the coliseum, do my daughters still need tickets even if they are free? If that's the case then we would still have to stand in the ticket line.
Also, does anyone have any recommendations for a reasonably priced private guide for the coliseum/forum? Thanks to everyone in advance!